<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>第一种颜色表示_颜色名</title>
    <style>
        /* 颜色名表达不好的原因:不够精确 */
        div {
            background-color: pink;
            width: 100px;
            height: 100px;
        }
    </style>
</head>
<body>
    <div></div>
</body>
</html>